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12. Appendix E
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12-8
The CURRENT AMOUNT OF DATA READ field indicates the amount of data physically read from the medium
during this load of the medium. This value is expressed in increments of 1048576 bytes (e.g., a value of one means
1048576 bytes, two means 2097152 bytes, etc.).
The CURRENT READ RETRIES COUNT field indicates the number of times a read retry was performed during this
load of the medium. The exact definition of the error counters is not part of this standard. This counter should not be
used to compare products because the products may define errors differently.
The PREVIOUS AMOUNT OF DATA WRITTEN field indicates the amount of data physically written to the medium
during the previous medium load. This value is expressed in increments of 1048576 bytes (e.g., a value of one
means 1048576 bytes, two means 2097152 bytes, etc.).
The PREVIOUS WRITE RETRY COUNT field indicates the total number of write retries during the previous medium
load. The exact definition of the error counters is not part of this standard. This counter should not be used to
compare products because the products may define errors differently.
The PREVIOUS AMOUNT OF DATA READ field indicates the amount of data physically read from the medium
during the previous medium load. This value is expressed in increments of 1048576 bytes (e.g., a value of one
means 1048576 bytes, two means 2097152 bytes, etc.).
The PREVIOUS READ RETRIES COUNT field indicates the number of times a read retry was performed during the
previous medium load. The exact definition of the error counters is not part of this standard.
This counter should not be used to compare products because the products may define errors differently.
The TOTAL AMOUNT OF DATA WRITTEN field indicates the total amount of data physically written to the medium
since the last medium format. This value accumulates over the life of the medium but it is reset to zero after a
medium format. This value is expressed in increments of 1048576 bytes (e.g., a value of one means 1048576 bytes,
two means 2097152 bytes, etc.).
The TOTAL WRITE RETRIES COUNT field indicates the total number of write retries since the last medium format.
This count accumulates over the life of the medium but it is reset to zero after a medium format. The exact definition
of the error counters is not part of this standard. This counter should not be used to compare products because the
products may define errors differently.
The TOTAL AMOUNT OF DATA READ field indicates the total amount of data physically read from the medium
since the last medium format. This value accumulates over the life of the medium but it is reset to zero after a
medium format. This value is expressed in increments of 1048576 bytes (e.g., a value of one means 1048576 bytes,
two means 2097152 bytes, etc.).
The TOTAL READ RETRIES COUNT field indicates the number of times a read retry was performed since the last
medium format. The exact definition of the error counters is not part of this standard. This counter should not be used
to compare products because the products may define errors differently. This count accumulates over the life of the
medium but it is reset to zero after a medium format.
The LOAD COUNT field indicates the number of loads since the last medium format. This count accumulates over
the life of the medium but it is reset to zero after a medium format.
The TOTAL CHANGE PARTITION COUNT field indicates the number of times that switches between partitions
have been performed on the medium. This count accumulates over the life of the medium but it is reset to zero after
a medium format.
The TOTAL PARTITION INITIALIZE COUNT field indicates the number of times that any of the partitions on the
medium have been erased. This count accumulates over the life of the medium but it is reset to zero after a medium
format.
PARTITION USAGE HISTORY: Provides statistical counters (table 12-10) for the partition specified by the
PARTITION NUMBER field in the CDB. If a field is not used it should be set to zero.